Racom RIPEX-154 用户手册
assigned to COM1(2) or to a Terminal server or to any special daemon running in the destin-
ation RipEX, the packet is discarded.
ation RipEX, the packet is discarded.
○ Table
The Address translation is defined in a table. There are no limitations like when the Mask
translation is used. If there are more SCADA units on RS485 interface, their “Protocol addresses”
translate to the same IP address and UDP port pair. . There are 3 possibilities how to fill in aline
in the table:
− One "Protocol address" to one "IP address" (e.g.: 56 −−> 192.168.20.20)
− Interval of "Protocol addresses" to one "IP address" (e.g.: 56-62 −−> 192.168.20.20)
− Interval of "Protocol addresses" to interval of "IP addresses" (e.g.: 56-62 −−> 192.168.20.20-
26). It is possible to write only the start IP and dash, the system will add the end address itself.
■ Protocol address
translation is used. If there are more SCADA units on RS485 interface, their “Protocol addresses”
translate to the same IP address and UDP port pair. . There are 3 possibilities how to fill in aline
in the table:
− One "Protocol address" to one "IP address" (e.g.: 56 −−> 192.168.20.20)
− Interval of "Protocol addresses" to one "IP address" (e.g.: 56-62 −−> 192.168.20.20)
− Interval of "Protocol addresses" to interval of "IP addresses" (e.g.: 56-62 −−> 192.168.20.20-
26). It is possible to write only the start IP and dash, the system will add the end address itself.
■ Protocol address
This is the address which is used by SCADA protocol. It may be set either in Hexadecimal
or Decimal format according the List box value.
Protocol address length can be 1 Byte, only for DNP3 and UNI protocols 2 Bytes.
or Decimal format according the List box value.
Protocol address length can be 1 Byte, only for DNP3 and UNI protocols 2 Bytes.
■ IP
IP address to which Protocol address will be translated. This IP address is used as destination
IP address in UDP datagram in which serial SCADA packet received from COM1(2) is en-
capsulated.
IP address in UDP datagram in which serial SCADA packet received from COM1(2) is en-
capsulated.
■ UDP port (Interface)
This is the UDP port number which is used as destination UDP port in UDP datagram in
which the serial SCADA message, received from COM1(2), is encapsulated.
which the serial SCADA message, received from COM1(2), is encapsulated.
■ Note
You may add a note to each address up to 16 characters long for your convenience. (E.g.
“Remote unit #1" etc.).
“Remote unit #1" etc.).
■ Active
You may tick/untick each translation line in order to make it active/not active.
■ Modify
Edit Delete Add buttons allow to edit or to add or to delete a line. The lines can be sorted
using up and down arrows.
using up and down arrows.
Terminal servers
Generally a Terminal Server (also referred to as a Serial Server) enables connection of devices with
serial interface to a RipEX over the local area network (LAN). It is a virtual substitute for devices used
as serial-to-TCP(UDP) converters.
serial interface to a RipEX over the local area network (LAN). It is a virtual substitute for devices used
as serial-to-TCP(UDP) converters.
Examples of the use:
A SCADA application in the centre should be connected to the Radio network via a serial interface,
however for some reason that serial interface is not used. The operating system (e.g. Windows) can
provide a virtual serial interface to such application and converts the serial data to TCP (UDP) datagrams,
which are then received by the Terminal server in RipEX.
This type of interconnection between RipEX and application is especially advantageous when:
A SCADA application in the centre should be connected to the Radio network via a serial interface,
however for some reason that serial interface is not used. The operating system (e.g. Windows) can
provide a virtual serial interface to such application and converts the serial data to TCP (UDP) datagrams,
which are then received by the Terminal server in RipEX.
This type of interconnection between RipEX and application is especially advantageous when:
•
there is not any physical serial interface on the computer
•
the serial cable between the RipEX and computer would be too long (e.g. the RipEX is installed
very close to the antenna to improve radio coverage).
very close to the antenna to improve radio coverage).
•
the LAN between the computer and the place of RipEX installation already exists
•
Modbus TCP is used with local TCP sessions on slave sites or when combination of Modbus RTU
and Modbus TCP is used. For more information refer to Application note Modbus TCP/RTU
and Modbus TCP is used. For more information refer to Application note Modbus TCP/RTU
2
This
applies also to other SCADA protocol TCP versions, e.g. DNP3 TCP.
2
http://www.racom.eu/eng/products/m/ripex/app/modbus.html
RipEX Radio modem & Router – © RACOM s.r.o.
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Advanced Configuration